SIP Tester is an excellent free VoIP load Testing tool that enables you to Test VoIP hardware, software or network. It can simulate thousands of parallel incoming and outgoing SIP calls using RTP media, test call quality and create real-time reports. It supports Windows 2021, Windows NT, Windows XP and Windows Vista. It runs as a small program which is invisible in the system tray. You only need to open an Internet Explorer window to start SIP Tester. If there is no Internet Explorer window, SIP Tester will prompt you to open one and then it will automatically appear and function.
SIP tester works in two modes - as a server mode and client mode. As server mode it receives phone calls and processes the data, forwards it to connected callers and delivers them good quality voice rtp audio experience. In client mode it is used along with SIP based remote service or SIP trunking protocol to forward phone calls through the internet. It forwards to audio packets to attached phones, which then play the transmitted voice as audio output. The great advantage of this is that you don't need any special hardware or software for this application and can use it from anywhere in the world.
For SIP load testing and monitoring tool that enables you to test VoIP hardware, software and networks see SIP Tracer. SIP Tracer is an ideal SIP load testing and monitoring tool that can be easily integrated in any web-based system and which can provide real-time traffic statistics and alerts. This application has a user interface that is simple and straightforward and can be operated by any non-technical person. SIP Tracer works well with any web based SIP solution and can be used by any organization in any part of the world. It has a user-friendly interface and can be used along with SIP clients and other softwares such as ICQ and Skype for free.